Health & Medicine
- Brain
Trading smartphone time for sleep? Your loss
A new study shows more and more teenagers are hanging out on devices when they should be catching ZZZs, putting their health at risk.
- Health & Medicine
High-nicotine e-cigs up chance teen will become a smoker
New study links vaping high levels of nicotine to greater likelihood teens will vape — and smoke — six months later.
- Genetics
Doctors repair skin of boy dying from ‘butterfly’ disease
Researchers fixed a genetic defect, then replaced about 80 percent of a child’s skin. This essentially cured the boy’s life-threatening disease.
- Chemistry
Scientists Say: Amino Acid
Amino acids are small molecules that make up proteins and serve as messengers in our cells.
- Health & Medicine
Scientists Say: Vestigial
This adjective is used to describe something — like a body part or organ — that doesn’t have a function. Often it is smaller or less developed than the functional version in another species.
- Chemistry
Touching receipts can lead to lengthy pollutant exposures
The chemical BPA, which coats some cash-register receipts, may linger in the body for far longer than if someone had ingested it.
- Chemistry
Explainer: Store receipts and BPA
The chemical BPA may become trapped in the skin, causing it to linger in the body for a week or more after touching receipt paper.
- Health & Medicine
For teens, a good mood depends on good sleep
Teens need eight to 10 hours of sleep at night to feel good and function well the next day, a new data show.
- Health & Medicine
Student invents 3-in-1 hygiene powder
A teen who volunteers at a homeless center has developed a powdery product that can serve as dry shampoo, body powder and toothpaste.
- Health & Medicine
Vaping may stiffen the heart and blood vessels
Exposure to e-cigarette vapors damages blood vessels in mice, suggesting that vaping could put people at risk for heart disease.
- Health & Medicine
Analyze This: Does moderate screen time boost teen happiness?
Computers, smartphones and TVs are everywhere. And scientists are trying to discover whether that’s a good thing for our well-being.
- Brain
A cell hookup helps the tongue tell sweet from sour
To keep your sense of taste, new taste cells need to hook up to your brain every few weeks. Now, scientists have figured out how they do it.
